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{
  "dataset": "lucky9-cyou/mimic-iv-aligned-ppg-ecg",
  "shards_total": 412,
  "shards_sampled_meta": 120,
  "segments_meta_scanned": 14371,
  "unique_patients_in_sample": 111,
  "unique_patients_extrapolated": 381,
  "total_duration_hours_sampled": 236.97,
  "total_duration_hours_estimated": 813.6,
  "ecg_fs_median_hz": 249.88999938964844,
  "ppg_fs_median_hz": 124.94499969482422,
  "ecg_siglen_median_samples": 14994,
  "ppg_siglen_median_samples": 7497,
  "ecg_lead_counts_top10": {
    "II": 13471,
    "V": 12326,
    "aVR": 11218,
    "III": 1748,
    "aVF": 399,
    "V2": 221,
    "V5": 221,
    "I": 82
  },
  "lead_II_available_frac": 0.9373738779486466,
  "ptt_beats_measured": 10193,
  "ptt_good_segments": 150,
  "ptt_segments_attempted": 158,
  "ptt_median_ms": 276.1214941315409,
  "ptt_p5_ms": 92.04049804384695,
  "ptt_p95_ms": 448.1972078656895,
  "ptt_within_segment_std_median_ms": 106.83521620259722,
  "ptt_within_segment_std_p90_ms": 129.12106079110902
}